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प्रश्न
A metal oxide that is reduced by hydrogen is
विकल्प
Al2O3
CuO
CaO
Na2O
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उत्तर
CuO
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संबंधित प्रश्न
In the context of redox reactions, the removal of hydrogen from a substance is known as ______.
Indicate which of the following statement is true and which is false:
The removal of hydrogen from a substance is called reduction.
How would you change a metal like Cu into its ions?
Balance the given chemical reaction as per the instructions below.
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Oxidation means losing electrons then what is reduction?
The process of reduction involves ____________.
Which among the following are physical or chemical change?
Sublimation of solid ammonium chloride
Oxidizing agents are otherwise called ______.
Identify the following reactions as oxidation/reduction/redox reaction
Zn + CuSO4 → Cu + ZnSO4
Find the oxidation number of the element in the following compound.
Zn in ZnSO4
When hydrogen gas is passed over black copper oxide, a reddish-coloured layer of copper is formed.
Answer the questions that follow based on this reaction.
- Write the equation.
- What type of reaction is it?
- Complete the blanks:
In this reaction, an oxygen atom goes away from CuO (copper oxide), which means that ______ of copper oxide takes place, whereas a hydrogen molecule takes up an oxygen atom and water (H2O) is formed, meaning ______ of hydrogen takes place.
